anabasis (n.)

1706, from Greek anabasis "military expedition," literally "a going up (from the coast)," especially in reference to the advance of Cyrus the Younger and his Greek mercenaries from near the Aegean coast into Asia, and the subsequent story of the retreat of the 10,000 narrated by Xenophon (401 B.C.E.). From anabainein "to go up, mount;" from ana "up" (see ana-) + bainein "to go, walk, step," from PIE root *gwa- "to go, come." Related: Anabatic.